CN112260765B - Gamma-ray communication system and communication method - Google Patents
Gamma-ray communication system and communication method Download PDFInfo
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- CN112260765B CN112260765B CN202011119514.0A CN202011119514A CN112260765B CN 112260765 B CN112260765 B CN 112260765B CN 202011119514 A CN202011119514 A CN 202011119514A CN 112260765 B CN112260765 B CN 112260765B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/90—Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H04B10/516—Details of coding or modulation
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Abstract
The invention discloses a gamma-ray communication system and a communication method, comprising an information source, a modulation circuit, a gamma-ray emission device, a gamma-ray shield, a gamma-ray detector and a demodulation circuit which are sequentially arranged along a signal transmission direction, wherein the gamma-ray emission device comprises a radioactive source which emits gamma-rays, and the information source converts an information signal into an input electric signal; the modulation circuit controls gamma rays to be shielded or not shielded by a gamma ray shielding body according to the input electric signal to form a gamma ray signal; the gamma-ray detector receives the gamma-ray signal and converts the gamma-ray signal into an output electric signal; the demodulation circuit receives the output electric signal, demodulates the output electric signal and outputs the demodulated output electric signal. The invention realizes the communication by utilizing gamma rays; the frequency range of the electromagnetic waves which can be used for communication is widened; a new technical means is provided for solving the communication problem in the electromagnetic shielding environment.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a gamma-ray communication system and a gamma-ray communication method.
Background
The electromagnetic wave is an oscillating particle wave which is derived and emitted in space by an electric field and a magnetic field which are the same and perpendicular to each other, is an electromagnetic field which propagates in a wave form and has the particle duality.
In 1887, it was experimentally shown that electromagnetic energy can propagate across space, thus prompting the birth of radio and being the origin of the entire mobile communication. Since radio telegraph communication, radio communication, microwave communication, laser communication, and the like have been developed successively, in 2007, the astronomical doctor KeithGendreau, the godard space flight center of NASA in the united states, proposed the concept of X-ray communication, and obtained preliminary communication verification. Up to now, radio waves, infrared rays, visible light, ultraviolet rays, and X-rays among electromagnetic waves have been used for communication.
Gamma rays are rays released when transition of nuclear energy level is degenerated, and are electromagnetic waves having a wavelength shorter than 0.01 angstroms. The gamma rays have very strong penetrating power, and the gamma rays are utilized for communication, so that the gamma rays have very important significance for communication in an electromagnetic shielding environment, particularly the electromagnetic shielding environment formed by thick metal.
Disclosure of Invention
The invention aims to solve the technical problem that wireless communication cannot be carried out under an electromagnetic shielding environment formed by thick metal, and aims to provide a gamma-ray communication system and a gamma-ray communication method, which solve the problem that the wireless communication is carried out by utilizing gamma rays under the electromagnetic shielding environment formed by thick metal.
The invention is realized by the following technical scheme:
a gamma-ray communication system comprises an information source, a modulation circuit, a gamma-ray emission device, a gamma-ray shield, a gamma-ray detector and a modulation circuit which are sequentially arranged along a signal transmission direction, wherein the gamma-ray emission device comprises a radioactive source which emits gamma-rays, and the information source converts an information signal into an input electric signal; the modulation circuit controls the gamma ray to be shielded or not shielded by the gamma ray shielding body according to the input electric signal to form a gamma ray signal; the gamma-ray detector receives the gamma-ray signal and converts the gamma-ray signal into an output electric signal; and the demodulation circuit receives the output electric signal, demodulates the output electric signal and outputs the demodulated output electric signal.
Gamma rays are an electromagnetic wave of a very high frequency and have a very strong penetrating power. The invention codes the information signal by controlling the generation or non-generation of the gamma ray at the initiating end of the communication to form a gamma ray signal, judges the existence or non-existence of the gamma ray by a gamma ray detector at the receiving end of the communication, receives the gamma ray signal, converts and demodulates the gamma ray signal and then outputs the gamma ray signal to complete the whole communication, thereby realizing the information communication taking the gamma ray as a carrier. Under the electromagnetic shielding environment, the gamma ray communication has very important significance.
Furthermore, the gamma ray shielding body is a shielding shell for wrapping the gamma ray emission device, and a ray through hole is formed in the shielding shell; the modulation circuit controls the gamma rays to pass through the ray through hole (7) or be shielded according to the input electric signals to form gamma ray signals.
Further, the shielding shell moves relative to the radioactive source, so that the gamma rays pass through the ray through hole or are shielded by the shielding shell. The radioactive source radiates gamma rays through the change of the spatial position of the radioactive source, and the radioactive source does not radiate gamma rays through the physical shielding of the radioactive source by using the shielding shell.
Further, the shielding shell is connected with the modulation circuit.
Further, the radioactive source is connected with the modulation circuit.
Furthermore, a shielding cover body is arranged on the ray through hole and movably connected with the shielding shell, and when the shielding cover body moves relative to the ray through hole, the gamma ray penetrates through the ray through hole or is shielded by the shielding cover body.
Furthermore, a plurality of radioactive sources are arranged and regularly distributed on a two-dimensional space; the gamma-ray detectors are multiple and correspond to the radioactive sources one by one.
The loading of information on the gamma rays is realized by controlling the intensity of the gamma rays to be distributed in a two-dimensional space according to a certain rule; the gamma-ray detectors corresponding to the gamma-ray generating source distribution are used for realizing the identification of gamma-ray signals, and for the communication of continuous information or large information amount information, the information can be stored while the information pulse is identified for the first time, and the communication is completed in a secondary identification mode. The communication method can conveniently realize discontinuous multi-frequency information exchange and also can realize continuous information communication.
Furthermore, the information source, the modulation circuit and the radioactive source are positioned at one side of the shielding space, and the gamma ray detector and the modulation circuit are positioned at the other side of the shielding space.
The invention also discloses a gamma-ray communication method, which comprises a radioactive source and a shielding shell wrapping the radioactive source, wherein the shielding shell is provided with a ray through hole, and the gamma-ray communication method comprises the following steps: step S1: converting the information signal into an input electrical signal;
step S2: controlling the gamma ray to pass through the ray through hole or be shielded according to the input electric signal to form a gamma ray signal; step S3: converting the gamma ray signal into an output electrical signal; step S4: and demodulating the output electric signal and outputting the demodulated output electric signal.
Further, the shielding shell moves relative to the radioactive source, so that the gamma rays pass through the ray through hole or are shielded by the shielding shell.
Furthermore, a shielding cover body is arranged on the ray through hole and movably connected with the shielding shell, and when the shielding cover body moves relative to the ray through hole, the gamma ray penetrates through the ray through hole or is shielded by the shielding cover body.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the gamma ray is utilized for communication;
2. the frequency range of the electromagnetic waves which can be used for communication is widened;
3. a new technical means is provided for solving the communication problem in the electromagnetic shielding environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural view of embodiment 1;
FIG. 3 is a structural view of embodiment 6;
FIG. 4 is a layout of radioactive sources in two dimensions;
fig. 5 is a gamma ray combination detector.
Reference numbers and corresponding part names in the drawings:
the device comprises a 1-radioactive source, a 2-gamma ray detector, a 3-modulation circuit, a 4-demodulation circuit, a 5-shielding shell, a 6-shielding layer and a 7-ray through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The present embodiment 1 is a gamma-ray communication system, as shown in fig. 1 and fig. 2, which includes an information source, a modulation circuit 3, a gamma-ray emission device, a gamma-ray detector 2, and a demodulation circuit 4, which are sequentially arranged along a signal transmission direction, wherein the gamma-ray emission device emits gamma rays, the gamma-ray emission device includes a radiation source 1 and a shielding housing 5 enclosing the radiation source, and a radiation through hole 7 is formed in the shielding housing 5; when the gamma ray emitting device emits gamma rays, the gamma rays pass through the ray through hole 7; when the gamma-ray emitting means does not emit gamma-rays, the gamma-rays are shielded. The information source converts the information signal into an input electric signal; the modulation circuit 3 controls gamma rays to pass through the ray through hole 7 or be shielded according to the input electric signals to form gamma ray signals; the gamma ray detector 2 receives the gamma ray signal and converts the gamma ray signal into an output electric signal; the demodulation circuit 4 receives the output electrical signal, demodulates the output electrical signal, and outputs the demodulated output electrical signal.
Gamma rays are an electromagnetic wave of a very high frequency and have a very strong penetrating power.
In this embodiment 1, at an originating end of communication, an information signal is encoded by controlling generation or non-generation of a γ ray to form a γ ray signal, and at a receiving end of communication, a γ ray detector determines presence or absence of a γ ray, receives the γ ray signal, converts and demodulates the γ ray signal, and outputs the signal, thereby completing the whole communication and implementing information communication using the γ ray as a carrier. Under the electromagnetic shielding environment, the gamma ray communication has very important significance.
Example 2
In the present embodiment 2, based on the embodiment 1, the shielding housing 5 moves relative to the radiation source 1, so that the gamma ray passes through the ray through hole 7 or is shielded by the shielding housing 5. The radioactive source radiates gamma rays through the change of the spatial position of the radioactive source, and the radioactive source does not radiate gamma rays through the physical shielding of the radioactive source by using the shielding shell.
The shielding shell moves relative to the radioactive source in two modes, one mode is that the radioactive source is kept static, the shielding shell 5 is connected with the modulation circuit 3, and the modulation circuit controls and drives the shielding shell according to an input electric signal, so that the shielding shell moves relative to the radioactive source, and gamma rays possibly pass through the ray through hole and are possibly shielded by the shielding shell while moving, thereby realizing the coding of gamma ray signals through the on/off of the gamma rays. The other mode is that the shielding shell is kept still, the radioactive source 1 is connected with the modulation circuit 3, the modulation circuit controls and drives the radioactive source to move according to the input electric signal, so that the radioactive source moves relative to the shielding shell, and gamma rays possibly pass through the ray through hole and are possibly shielded by the shielding shell at the same time of the movement, thereby realizing the coding of gamma ray signals through the on/off of the gamma rays.
Example 3
In this embodiment 3, based on embodiment 1, a shielding cover is disposed on the radiation through hole 7, the shielding cover is movably connected to the shielding shell 5, and when the shielding cover moves relative to the radiation through hole 7, the gamma ray passes through the radiation through hole 7 or is shielded by the shielding cover.
In this embodiment 3, in a specific implementation process, two connection modes are provided for the shielding cover and the radiation through hole, one connection mode is that the shielding shell is connected to any edge position of the shielding cover at a position close to the radiation through hole through a shaft, in a process of the axial movement of the shielding cover, when the shielding cover does not cover the radiation through hole, a gamma ray passes through the radiation through hole, and when the shielding cover covers the radiation through hole, the gamma ray is shielded by the shielding cover, so that the coding of the gamma ray signal is realized through on/off of the gamma ray. The other connection mode is that the position of the shielding shell close to the ray through hole is hinged with any edge position of the shielding cover body, when the shielding cover body does not cover the ray through hole in the covering process of the shielding cover body, gamma rays penetrate through the ray through hole, and when the shielding cover body covers the ray through hole, the gamma rays are shielded by the shielding cover body, so that the gamma ray signals are encoded through the on/off of the gamma rays.
Example 4
In this embodiment 4, based on embodiment 1, as shown in fig. 1, the information source, the modulation circuit 3 and the radiation source 1 are located in the space of the shielding layer 6, and the γ -ray detector 2 and the modulation circuit 4 are located outside the space of the shielding layer 6. This embodiment 4 realizes wireless communication inside and outside the electromagnetic shielding environment, and especially communication under the electromagnetic shielding environment formed by thick metal has very important meaning.
Example 5
This embodiment 5 is a system and method using gamma ray communication, wherein the gamma ray generating device is a radioactive source, such as a isotope source, an accelerator source, etc. The gamma-ray is used as a carrier for information loading to carry out information transmission, the intensity and energy parameters of the gamma-ray are used for modulating the gamma-ray, and a gamma-ray detector is used for receiving gamma-ray signals.
The system of this embodiment 5 includes: the system comprises an information source, a modulation device, a demodulation device and an information receiving end. The demodulation device comprises a gamma-ray detector and a demodulation circuit. The modulation circuit can control the radioactive source to generate gamma rays or not, and the generation of gamma rays and the non-generation of gamma rays are relative to the gamma ray detector. If the gamma-ray detector receives a gamma-ray signal with specific intensity or energy, defining that the radioactive source "generates" gamma-ray at the moment; if the gamma-ray detector does not receive gamma-rays with a specific intensity or energy, or the received gamma-ray signal is obviously weakened, the radioactive source is defined to generate no gamma-rays at the moment.
The communication method of the system of this embodiment 5 is as follows:
the information source converts signals such as sound, images and the like into original electric signals;
the modulation circuit controls the radioactive source to generate or not generate gamma rays according to the received original electric signals, wherein the generated gamma rays correspond to the code element '0', the generated gamma rays correspond to the code element '1', and information is coded by binary code elements and loaded on the gamma rays to generate gamma ray signals;
the gamma-ray detector receives the gamma-ray signal and converts the gamma-ray signal into an electric signal;
the demodulation circuit receives the electric signal output by the gamma-ray detector, and the electric signal is input to the information receiving end after demodulation to complete communication.
This embodiment 5 realizes communication using gamma rays; the frequency range of the electromagnetic waves which can be used for communication is widened; a new technical means is provided for solving the communication problem in the electromagnetic shielding environment.
Example 6
The communication method of this embodiment 6 specifically includes the following steps:
and 2, controlling the radioactive source to generate or not generate gamma rays by the modulation circuit according to the received original electric signal.
The radioactive source used herein is an isotope source, an accelerator source, or the like, and the radioactive source itself continuously emits gamma rays into a space, and the generation or non-generation of gamma rays by the radioactive source is, with respect to the gamma ray detector, when the gamma ray detector detects a gamma ray signal of a specific intensity or energy, the radioactive source is considered to generate gamma rays, and when the gamma ray detector does not detect a gamma ray signal of a specific intensity or energy, the radioactive source is considered to not generate gamma rays. The radioactive source can generate or not generate gamma rays through the change of the space position of the radioactive source or the physical shielding of the radioactive source, for example, the emission direction of the radioactive source is changed, so that the generated gamma rays do not pass through the area of the gamma ray detector, the gamma ray detector cannot detect gamma ray signals, and the radioactive source does not generate gamma rays. The gamma rays are shielded by the shielding body, so that the gamma rays generated by the radioactive source cannot be transmitted continuously along the set direction.
The gamma-ray detector judges whether the radioactive source generates or does not generate gamma-rays by detecting the intensity of the gamma-rays or the relative intensity of the energy of the gamma-rays. When the detection value is weak, the radioactive source does not produce gamma rays, and when the detection value is strong, the radioactive source produces gamma rays. Generating a code element '0' corresponding to the gamma ray, not generating a code element '1' corresponding to the gamma ray, encoding information through a binary code element and loading the information on the gamma ray to generate a gamma ray signal;
and 4, receiving the electric signal output by the gamma-ray detector by the demodulation circuit, demodulating the electric signal and inputting the demodulated electric signal to an information receiving end to finish communication.
The modulation device comprises a modulation circuit and a radioactive source, and the demodulation device comprises a gamma-ray detector and a demodulation circuit;
the information source converts information such as images, sounds and the like into original electric signals, the modulation circuit controls the radioactive source to generate or not generate gamma rays according to the received original electric signals, and the generation and non-generation of the gamma rays are relative to the gamma ray detector. If the gamma-ray detector receives a stronger gamma-ray signal (intensity or energy signal), the radioactive source is defined to "generate" gamma rays at the moment; if the gamma-ray detector does not receive or receives a weak gamma-ray signal, then the radioactive source is defined to "not generate" gamma-rays. Generating a gamma ray corresponding to a code element '0', not generating a gamma ray corresponding to a code element '1', encoding information through a binary code element and loading the information on the gamma ray to generate a gamma ray signal; the gamma-ray detector receives the gamma-ray signal and converts the gamma-ray signal into an electric signal; the demodulation circuit receives the electric signal output by the gamma-ray detector, and the electric signal is input to the information receiving end after demodulation to complete communication.
Example 7
This embodiment 7 is based on embodiment 1, and includes: the system comprises an information source, a conversion module, an identification module and an information receiving end. The conversion module comprises a modulation circuit and a gamma ray combination generator, wherein the gamma ray combination generator consists of radioactive sources 1 which are distributed in a two-dimensional space according to a certain rule. As shown in fig. 4 and 5.
The identification module comprises a gamma-ray combined detector and a demodulation circuit, wherein the gamma-ray combined detector consists of a plurality of gamma-ray detectors 2 which are distributed in positions corresponding to the two-dimensional distribution rule of the radioactive source 1.
The method comprises the following steps:
the modulation circuit modulates the communication information by controlling the radioactive sources 1 at different positions in the gamma-ray combination generator to generate gamma rays with different intensities according to the received electric signals. For radioactive sources 1 distributed in a two-dimensional space according to a certain rule, a two-dimensional intensity information plane graph can be generated by controlling the radioactive sources 1 at different positions to generate gamma rays with different intensities, and instant information is loaded on the two-dimensional intensity information plane graph under the control of a modulation circuit to form a primary information pulse;
the gamma-ray detector 2 in the gamma-ray combined detector measures the intensity of the received gamma-ray, because the gamma-ray detector 2 in the gamma-ray combined detector is distributed according to the two-dimensional distribution rule of the radioactive source, the gamma-ray combined detector can identify a two-dimensional intensity information plane graph generated by the gamma-ray combined generator through intensity measurement information, and a demodulation circuit demodulates the information according to the identified two-dimensional intensity information plane graph and outputs the information to an information receiving end to finish one-time information transmission.
When information needs to be transmitted continuously or one pulse is not enough to transmit all information, the whole process is as follows:
and 6, the identification module sends the identified continuous information to a receiving source to complete the transmission of the information.
The loading of information on the gamma rays is realized by controlling the intensity of the gamma rays to be distributed in a two-dimensional space according to a certain rule; the gamma-ray detectors corresponding to the gamma-ray generating source distribution are used for realizing the identification of gamma-ray signals, and for the communication of continuous information or large information amount information, the information can be stored while the information pulse is identified for the first time, and the communication is completed in a secondary identification mode. The communication method can conveniently realize discontinuous multi-frequency information exchange and also can realize continuous information communication.
This embodiment 7 can conveniently realize discontinuous information exchange of multiple frequencies and also realize continuous information communication. The communication method can also be used in an electromagnetic shielding environment.
The information source, the modulation circuit, the gamma ray emitting device and the gamma ray shielding body are positioned on one side of the electromagnetic shielding environment, and the gamma ray detector and the demodulation circuit are positioned on the other side of the electromagnetic shielding environment.
When the information source, the modulation circuit, the gamma ray emitting device and the gamma ray shielding body are positioned in an electromagnetic shielding environment, and the gamma ray detector and the modulation circuit are positioned outside the electromagnetic shielding environment, signals are transmitted and communicated from inside to outside through the electromagnetic shielding environment; when the information source, the modulation circuit, the gamma ray emitting device and the gamma ray shielding body are positioned outside the electromagnetic shielding environment, and the gamma ray detector and the modulation circuit are positioned inside the electromagnetic shielding environment, signals are transmitted and communicated from outside to inside in the electromagnetic shielding environment; two sets of the system of the invention can also be used to realize the two-way communication inside and outside the electromagnetic shielding environment.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A gamma-ray communication system is characterized by comprising an information source, a modulation circuit (3), a gamma-ray emission device, a gamma-ray shield, a gamma-ray detector (2) and a demodulation circuit (4) which are sequentially arranged along a signal transmission direction, wherein the gamma-ray emission device comprises a radioactive source (1), the radioactive source (1) emits gamma rays, and the information source converts information signals into input electric signals;
the modulation circuit (3) controls the gamma ray to be shielded or not shielded by the gamma ray shield according to the input electric signal to form a gamma ray signal;
the gamma ray detector (2) receives the gamma ray signal and converts the gamma ray signal into an output electric signal;
and the demodulation circuit (4) receives the output electric signal, demodulates the output electric signal and outputs the demodulated output electric signal.
2. The gamma-ray communication system according to claim 1, wherein the gamma-ray shield is a shielding shell (5) which wraps the gamma-ray emission device, and a ray through hole (7) is arranged on the shielding shell (5);
the modulation circuit (3) controls the gamma rays to pass through the ray through hole (7) or be shielded according to the input electric signals to form gamma ray signals.
3. A gamma-ray communication system according to claim 2, characterized in that the shielding housing (5) is moved relative to the radiation source (1) so that the gamma-rays pass through the radiation passage opening (7) or are shielded by the shielding housing (5).
4. A gamma ray communication system according to claim 3, characterized in that the shielding housing (5) is connected to the modulation circuit (3).
5. A gamma-ray communication system according to claim 3, characterized in that the radiation source (1) is connected to the modulation circuit (3).
6. A gamma ray communication system according to claim 2, wherein a shielding cover is provided on the radiation passage opening (7), the shielding cover is movably connected to the shielding housing (5), and when the shielding cover moves relative to the radiation passage opening (7), the gamma ray passes through the radiation passage opening (7) or is shielded by the shielding cover.
7. A gamma-ray communication system according to claim 1, characterized in that said radioactive sources (1) are plural and regularly distributed in two dimensions; the gamma-ray detectors (2) are provided with a plurality of gamma-ray detectors, and correspond to the radioactive sources (1) one by one.
8. A gamma-ray communication system according to claim 1, characterized in that the information source, the modulation circuit (3) and the radiation source (1) are located on one side of the space of the shielding (6), and the gamma-ray detector (2) and the demodulation circuit (4) are located on the other side of the space of the shielding (6).
9. The gamma-ray communication method is characterized by comprising a radioactive source and a shielding shell wrapping the radioactive source, wherein the shielding shell is provided with a ray through hole, and the gamma-ray communication method comprises the following steps:
step S1: converting the information signal into an input electrical signal;
step S2: controlling the gamma ray to pass through the ray through hole or be shielded according to the input electric signal to form a gamma ray signal;
step S3: converting the gamma ray signal into an output electrical signal;
step S4: and demodulating the output electric signal and outputting the demodulated output electric signal.
10. A gamma ray communication method according to claim 9, wherein the shielding housing is moved relative to the radiation source so that the gamma rays pass through the radiation passage holes or are shielded by the shielding housing.
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